CN218783741U - Asymmetric magnetic pole hybrid excitation driving motor - Google Patents
Asymmetric magnetic pole hybrid excitation driving motor Download PDFInfo
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- CN218783741U CN218783741U CN202223184254.2U CN202223184254U CN218783741U CN 218783741 U CN218783741 U CN 218783741U CN 202223184254 U CN202223184254 U CN 202223184254U CN 218783741 U CN218783741 U CN 218783741U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model provides an asymmetric magnetic pole hybrid excitation driving motor belongs to car motor electrical apparatus technical field. The motor comprises a front end cover, a rear end cover and a machine shell between the front end cover and the rear end cover, wherein an asymmetric magnetic pole permanent magnet rotor and a claw pole electric excitation rotor are arranged in the machine shell, the asymmetric magnetic pole permanent magnet rotor and the claw pole electric excitation rotor respectively comprise a rotating shaft, and the asymmetric magnetic pole permanent magnet rotor and the claw pole electric excitation rotor are connected in parallel and are connected with the same stator. The utility model discloses in, the magnetic field that asymmetric magnetic pole permanent magnet rotor and claw utmost point electro-magnetic rotor produced is parallelly connected in the air gap and is synthesized, through size and the direction of adjusting claw utmost point electro-magnetic rotor circular telegram electric current, can adjust the magnetic field after permanent magnetic field and the electric excitation field superpose to can improve electric automobile's climbing ability and high-speed operating performance, solved among the current permanent magnet driving motor because the permanent magnet steel low-usage leads to with high costs, the low problem of price/performance ratio.
Description
Technical Field
The utility model belongs to the technical field of automobile motor electrical apparatus, specifically be an asymmetric magnetic pole hybrid excitation driving motor.
Background
At present, most of rotors of permanent magnet driving motors used by electric automobiles are of symmetrical magnetic pole structures. For example, a patent with application number 201710310325652.0 provides a built-in biradial permanent magnet steel synthetic magnetic field driving motor for an electric vehicle, and discloses the following technical scheme: each pole of the motor comprises two groups of radial permanent magnets, each group of permanent magnets is composed of two pieces of permanent magnet steel, and the multi-pole permanent magnets are uniformly arranged along the circumferential direction of the rotor and close to the outer edge side of the rotor iron core; although the magnetic field intensity of the motor can be improved by the mode, the utilization rate of the permanent magnet steel is reduced, so that the cost of the motor is increased, and the cost performance of the motor is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can overcome above-mentioned defect, the magnetic field is adjustable, output torque is big, compact structure, low-speed can increase magnetism, the high-speed asymmetric magnetic pole hybrid excitation driving motor that can the weak magnetism to solve among the current permanent magnet driving motor because the permanent magnet steel utilization ratio is low and lead to with high costs, the price/performance ratio low problem.
The utility model discloses a adopt following technical scheme to realize:
the utility model provides an asymmetric magnetic pole hybrid excitation driving motor, includes front end housing, rear end cap to and the casing between front end housing and the rear end cap, be equipped with asymmetric magnetic pole permanent-magnet rotor and claw utmost point electro-magnetic rotor in the casing, asymmetric magnetic pole permanent-magnet rotor and claw utmost point electro-magnetic rotor all include the pivot, and asymmetric magnetic pole permanent-magnet rotor and claw utmost point electro-magnetic rotor connect in parallel and connect same stator.
In the utility model, the magnetic fields generated by the asymmetric magnetic pole permanent magnet rotor and the claw pole electro-magnetic rotor are synthesized in parallel in the air gap; when the electric automobile starts or climbs, the excitation winding of the claw pole electric excitation rotor is electrified with positive current, and a magnetic field generated by the positive current and a permanent magnetic field are superposed to increase the output torque of the driving motor, so that the climbing capability of the electric automobile is improved; when the electric automobile runs at a high speed, the excitation winding of the claw-pole electric excitation rotor is electrified with reverse current, and the magnetic field generated by the reverse current weakens the permanent magnetic field, so that the driving motor outputs constant power, and the high-speed running performance of the electric automobile is improved.
Furthermore, the asymmetric magnetic pole permanent magnet rotor also comprises a rotor core, the rotor core is pressed on the rotating shaft, the rotor core comprises a round rotor core punching sheet, an even number of splayed groove groups are arranged on the rotor core punching sheet, a first rectangular groove and a second rectangular groove are arranged between every two splayed groove groups, and the second rectangular groove is positioned on one side of the first rectangular groove towards the circle center; the splayed groove group, the first rectangular groove and the second rectangular groove all penetrate through the rotor core stamped sheet.
Furthermore, the splayed groove group comprises two radial rectangular grooves, the inner ends of the two radial rectangular grooves are respectively communicated with the two ends of the semi-circular groove, a first magnetic isolation air gap is arranged between the inner ends of the two radial rectangular grooves and the two ends of the semi-circular groove, the outer ends of the two radial rectangular grooves are not communicated with the outer circular edge of the rotor core punching sheet, and the inner circular arc surface of the semi-circular groove faces the circle center of the rotor core punching sheet.
Furthermore, the outer end of the first rectangular groove is communicated with the outer circular edge of the rotor core stamped sheet, a mounting round hole penetrating through the rotor core stamped sheet is formed in the middle of the lower end of the first rectangular groove, and an iron rivet is mounted in the mounting round hole; and second magnetic isolation air gaps are arranged at two ends of the second rectangular groove.
Furthermore, a piece of third rectangular permanent magnet steel is arranged in each of the two radial rectangular grooves, and the two opposite side surfaces of each piece of third rectangular permanent magnet steel are N poles; the semicircular groove is internally provided with semicircular permanent magnet steel, and the outer arc surface of the semicircular permanent magnet steel is an S pole.
Further, a first rectangular permanent magnet steel is installed in the first rectangular groove, and the outer side surface of the first rectangular permanent magnet steel is an N pole; and a second rectangular permanent magnet steel is arranged in the second rectangular groove, and the outer side surface of the second rectangular permanent magnet steel is an N pole.
Furthermore, the first rectangular permanent magnet steel is installed in the first rectangular groove through a pole shoe and a screw, and one end of the screw is fixed on the iron rivet.
Furthermore, the claw pole electric excitation rotor also comprises a front claw pole and a rear claw pole, the front claw pole and the rear claw pole are pressed on the rotating shaft, plastic frameworks are fixed on magnetic yokes of the front claw pole and the rear claw pole, an excitation winding is wound on the plastic frameworks, and the excitation winding is connected with an electronic controller through a carbon brush and a slip ring.
Furthermore, the carbon brush is arranged in a carbon brush holder, the carbon brush holder is fixed on the rear end cover, and the slip ring is fixed on the rotating shaft through non-conductive bakelite.
The utility model discloses the beneficial effect who realizes is:
compared with the prior art, the utility model, through the size and the direction of adjusting claw utmost point electric excitation rotor circular telegram electric current, can adjust the magnetic field after permanent magnetic field and the electric excitation field superpose to guarantee that driving motor can export invariable moment of torsion, improve climbing ability when low-speed operation, export invariable power, improve high-speed operation performance when high-speed operation.
Drawings
Fig. 1 is a schematic structural diagram of a driving motor according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of an asymmetric magnetic pole permanent magnet rotor in the driving motor according to the embodiment of the present invention;
in the figure: 1. a slip ring; 2. a carbon brush; 3. a rear end cap; 4. a rotating shaft; 5. a rear claw pole; 6. an excitation winding; 7. a front claw pole; 8. a housing; 9. a rotor core; 10. a first rectangular permanent magnet steel; 11. a pole shoe; 12. a screw; 13. iron rivets; 14. second rectangular permanent magnet steel; 15. semicircular permanent magnet steel; 16. a third rectangular permanent magnet steel; 17. a front end cover; 18. a first magnetically isolating air gap; 19. a second magnetic air gap.
Detailed Description
For the purpose of clarity, the embodiments of the present invention will be further described with reference to the accompanying drawings:
example 1
As shown in fig. 1 to 2, an asymmetric magnetic pole hybrid excitation driving motor includes a front end cover 17, a rear end cover 3, and a casing 8 between the front end cover 17 and the rear end cover 3, an asymmetric magnetic pole permanent magnet rotor and a claw pole electric excitation rotor are disposed in the casing 8, the asymmetric magnetic pole permanent magnet rotor and the claw pole electric excitation rotor both include a rotating shaft 4, and the asymmetric magnetic pole permanent magnet rotor and the claw pole electric excitation rotor are connected in parallel and are connected to a same stator. Wherein:
the asymmetric magnetic pole permanent magnet rotor also comprises a rotor iron core 9, and the rotor iron core 9 is pressed on the rotating shaft 4; the rotor core 9 comprises a round rotor core stamped sheet, and 4 splayed slot groups penetrating through the rotor core stamped sheet are arranged on the rotor core stamped sheet; the splayed groove group comprises 2 radial rectangular grooves, the inner ends of the 2 radial rectangular grooves are respectively communicated with the two ends of the semicircular groove, and a first magnetic isolation air gap 18 is arranged between the inner ends of the 2 radial rectangular grooves and the two ends of the semicircular groove; the outer end of each radial rectangular groove is not communicated with the outer circular edge of the rotor core stamped sheet, and the inner circular arc surface of each semicircular groove faces to the circle center of the rotor core stamped sheet. A first rectangular groove and a second rectangular groove which penetrate through the rotor iron core punching sheet are arranged between every two (2) splayed groove groups, and the second rectangular groove is positioned on one side of the first rectangular groove towards the circle center; the outer end of the first rectangular groove is communicated with the outer circular edge of the rotor core stamped sheet, a mounting round hole penetrating through the rotor core stamped sheet is formed in the middle of the lower end of the first rectangular groove, and an iron rivet 13 is mounted in the mounting round hole; two ends of the second rectangular groove are provided with symmetrical second magnetic isolation air gaps 19.
Respectively installing 8 identical third rectangular permanent magnet steels 16 in 8 radial rectangular grooves in 4 groups of splayed groove groups, wherein two opposite side surfaces of 2 third rectangular permanent magnet steels 16 in each group of splayed groove groups are N poles; the semicircular permanent magnet steels 15 are arranged in 4 semicircular grooves in 4 groups of the splay-shaped groove groups, and the outer arc surface of each semicircular permanent magnet steel 15 is an S pole. Installing 4 first rectangular permanent magnet steels 10 with the outer side surfaces of N poles into 4 first rectangular grooves, wherein the length of each first rectangular groove is greater than that of each first rectangular permanent magnet steel 10; the first rectangular permanent magnet steel 10 is installed in the first rectangular groove through a pole shoe 11 by a screw 12, one end of the screw 12 is fixed on an iron rivet 13, and the diameter of the screw 12 is smaller than that of an installation round hole for installing the iron rivet 13; 4 second rectangular permanent magnet steels 14 with the outer side surfaces of N poles are arranged in the 4 second rectangular grooves;
the claw pole electric excitation rotor also comprises a front claw pole 7 and a rear claw pole 5, claws of the front claw pole 7 and the rear claw pole 5 are staggered with each other, gaps between the claws are uniform, magnetic yokes of the front claw pole 7 and the rear claw pole 5 are fixed with a plastic framework, an excitation winding 6 is wound on the plastic framework, and the excitation winding 6 is connected with an electronic controller through a carbon brush 2 and a slip ring 1; the carbon brush 2 is arranged in a carbon brush 2 frame, the carbon brush 2 frame is fixed on the rear end cover 3, and the slip ring 1 is fixed on the rotating shaft 4 through non-conductive bakelite.
Based on the structure, the magnetic fields generated by the asymmetric magnetic pole permanent magnet rotor and the claw pole electro-magnetic rotor of the driving motor are synthesized in parallel in the air gap. Therefore, when the electric automobile starts or climbs, the excitation winding 6 of the claw pole electric excitation rotor is electrified with positive current, and the generated magnetic field is superposed with the permanent magnetic field, so that the output torque of the driving motor is increased, and the climbing capability of the electric automobile is improved; when the electric automobile runs at a high speed, the excitation winding 6 of the claw pole electric excitation rotor is electrified with reverse current, and a magnetic field generated by the reverse current weakens a permanent magnetic field, so that the driving motor outputs constant power, and the high-speed running performance is improved.
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the equivalent changes and improvements made within the essential scope of the present invention should be included within the patent coverage of the present invention.
Claims (9)
1. The utility model provides an asymmetric magnetic pole hybrid excitation driving motor, includes front end housing (17), rear end cap (3) to and casing (8) between front end housing (17) and rear end cap (3), its characterized in that: an asymmetric magnetic pole permanent magnet rotor and a claw pole electric excitation rotor are arranged in the machine shell (8), the asymmetric magnetic pole permanent magnet rotor and the claw pole electric excitation rotor respectively comprise a rotating shaft (4), and the asymmetric magnetic pole permanent magnet rotor and the claw pole electric excitation rotor are connected in parallel and are connected with the same stator.
2. The asymmetric-pole hybrid excitation drive motor according to claim 1, characterized in that: the asymmetric magnetic pole permanent magnet rotor also comprises a rotor core (9), the rotor core (9) is pressed on the rotating shaft (4), the rotor core (9) comprises a round rotor core stamped sheet, an even number of splayed groove groups are arranged on the rotor core stamped sheet, a first rectangular groove and a second rectangular groove are arranged between every two splayed groove groups, and the second rectangular groove is positioned on one side of the first rectangular groove towards the circle center; the splayed groove group, the first rectangular groove and the second rectangular groove all penetrate through the rotor core stamped sheet.
3. The asymmetric-pole hybrid excitation drive motor according to claim 2, characterized in that: the eight-shaped groove group comprises two radial rectangular grooves, the inner ends of the two radial rectangular grooves are respectively communicated with two ends of the semicircular groove, a first magnetic isolation air gap (18) is arranged between the inner ends of the two radial rectangular grooves and two ends of the semicircular groove, the outer ends of the two radial rectangular grooves are not communicated with the outer circular edge of the rotor core punching sheet, and the inner circular arc surface of the semicircular groove faces the circle center of the rotor core punching sheet.
4. The asymmetric-pole hybrid excitation drive motor according to claim 2, characterized in that: the outer end of the first rectangular groove is communicated with the outer circular edge of the rotor core stamped sheet, a mounting round hole penetrating through the rotor core stamped sheet is formed in the middle of the lower end of the first rectangular groove, and an iron rivet (13) is mounted in the mounting round hole; and second magnetic isolation air gaps (19) are arranged at two ends of the second rectangular groove.
5. The asymmetric-pole hybrid excitation drive motor according to claim 3, characterized in that: a piece of third rectangular permanent magnet steel (16) is arranged in each of the two radial rectangular grooves, and the two opposite side surfaces of each piece of third rectangular permanent magnet steel (16) are N poles; the semicircular groove is internally provided with semicircular permanent magnet steel (15), and the outer arc surface of the semicircular permanent magnet steel (15) is an S pole.
6. The asymmetric-pole hybrid excitation drive motor of claim 4, wherein: a first rectangular permanent magnet steel (10) is arranged in the first rectangular groove, and the outer side surface of the first rectangular permanent magnet steel (10) is an N pole; a second rectangular permanent magnet steel (14) is arranged in the second rectangular groove, and the outer side surface of the second rectangular permanent magnet steel (14) is an N pole.
7. The asymmetric-pole hybrid excitation drive motor according to claim 6, characterized in that: the first rectangular permanent magnet steel (10) is installed in the first rectangular groove through a pole shoe (11) and a screw (12), and one end of the screw (12) is fixed on an iron rivet (13).
8. The asymmetric-pole hybrid excitation drive motor according to claim 1, characterized in that: the claw pole electric excitation rotor further comprises a front claw pole (7) and a rear claw pole (5), the front claw pole (7) and the rear claw pole (5) are pressed on the rotating shaft (4), plastic frameworks are fixed on magnetic yokes of the front claw pole (7) and the rear claw pole (5), an excitation winding (6) is wound on the plastic frameworks, and the excitation winding (6) is connected with an electronic controller through a carbon brush (2) and a slip ring (1).
9. The asymmetric-pole hybrid excitation drive motor according to claim 8, wherein: the carbon brush (2) is arranged in a carbon brush (2) frame, the carbon brush (2) frame is fixed on the rear end cover (3), and the slip ring (1) is fixed on the rotating shaft (4) through non-conductive bakelite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223184254.2U CN218783741U (en) | 2022-11-28 | 2022-11-28 | Asymmetric magnetic pole hybrid excitation driving motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223184254.2U CN218783741U (en) | 2022-11-28 | 2022-11-28 | Asymmetric magnetic pole hybrid excitation driving motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218783741U true CN218783741U (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223184254.2U Active CN218783741U (en) | 2022-11-28 | 2022-11-28 | Asymmetric magnetic pole hybrid excitation driving motor |
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| Country | Link |
|---|---|
| CN (1) | CN218783741U (en) |
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2022
- 2022-11-28 CN CN202223184254.2U patent/CN218783741U/en active Active
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